Joint-fastening device



(No Model.)

' G. T. NEILL.

I JOINT FASTENING DEVICE.

No. 426,048. Patented Apr. 22. 1890.

mun/10mm UNITED STATES PATENT OFFICE.

GEORGE T. NEILL, OF DULUTH, MINNESOTA.

JOINT-FASTENING DEVICE.

SPECIFICATION forming part of Letters Patent No. 426,048, dated April 22,- 1890.

Application filed October 12, 1889. Serial No. 326,901. (No model.)

T0 on whom it may concern.-

Be it known that I, GEORGE T. NEILL, a citizen of the United States, residing at Dulnth, in the county of St. Louis and State of Minnesota, have invented a new and useful J oint-Fastening Device; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enable others skilled in the art to make and use the same.

This invention relates to improvements in joint-fastening devices, which will be hereinafter more particularly described and pointed out.

In the accompanying drawings, forming part of this specification, Figure 1 shows the invention applied to the end of a sound tenon and ready to be inserted in a socket. Fig. 2 is a perspective view of the device enlarged. Fig. 3 is a sectional elevation showing the parts of the device in assembled position.

A is a piece of sheet metal doubled back upon itself, having the butt of a size to fit the end of a round or square tenon, and having the two Wings a a serrated, so that the end teeth a a will point outwardly and pierce the top and bottom walls of a mortise or socket. The teeth a a." 011 the sides are made to point in such a manner as also to pierce the socket or mortise on the sides.

B is the rung, and O the leg, of any piece of furniture.

(1 cl, &c., are small holes punched in the sheet of metal to form points or teeth d on the inside, so that they can be made to pierce the tenon.

The device A is to be put on the end of the tenon b and the wings bent down, as shown, and the teeth a a so fixed that they will engage the sides of the mortise b, and when the tenon is forced into the mortise or socket c the points a a will pierce the sides of the socket or mortise and prevent any withdrawal of the rung.

This device is self-fastening and requires no other fixture or fastening.

I claim- A joint-fastening device formed of one piece of sheet metal doubled back upon itself, having serrations a a" directed outwardly to hold against the top, bottom, and sides of the walls of a mortise, and the teeth or projections cl to hold against the exterior of the rung or tenon, substantially as and for the purpose described.

GEORGE T. NEILL.

Witnesses:

M. L. MCGENDLEY, JOSEPH B. CoLToN. 

